Just needs the right place.

This would make good ambient BG music for an audio book, like HHGTG or something. All in the ear of the beholder and what not.

Needs more

A little random I thought, I think it needed more of a pattern to it. The beats also don't combine so well together. But you have the theme there, even though the beats don't combine well, they still give you the demon feeling.

Also, the song needs more beats to it.
It does have the potential, just fix it up.